CORAL 6CX-50
¥ 2,900 (1 unit, around 1965)
Commentary
16cm2-way coaxial speaker unit of Coral Golden 50 series.
It is a combination of 16 cm cone type woofer and horn type tweeter.
The edge part of the woofer uses a skybar edge.
This is a variant of the free edge and is used overseas as roll surround edge.
The magnetic circuit uses a pole yoke made of NKS magnet and high-purity iron material to improve efficiency.
The voice coil uses a long travel type to prevent the voice coil from coming off even at a large amplitude from the next time.
Duralumin diaphragm of 20 micron thickness is used for the vibration plate of the tweeter.
We have also adopted an aluminum edge-wise voice coil for the voice coil and a newly combined magnetic circuit for improving the level of the tweeter.
A rectangular diecast horn is used for the horn section.
A tweeter equalizer adjusts the phase shift of the sound from the diaphragm.
It has a built-in network.
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Model Rating
| Type | 16cm2-way coaxial speaker |
| Playback frequency band | 40 Hz to 22 kHz |
| Lowest resonance frequency (fo) | 40 Hz to 60 Hz |
| Crossover frequency | 4kHz |
| Output sound pressure level | 98dB |
| Program input | 10W |
| VC impedance | 16 Ω |
| Effective mass of vibration system | 5.1g |
| Qo | 0.36(50Hz) |
| Magnetic flux density | Low pass : 10,500 gauss High : 12,000 gauss |
| Total flux | Low : 60,000 maxwell |
| Weight | 1.12kg |